Multi-functional copolymers comprising rare earth metal complexes and devices thereof

An organic complex, wherein the organic complex is selected from the group consisting of:

• and wherein X is independently in each occurrence a halide;
• M is a rare earth metal;
• L1 is an enolate, carboxylate, sulfonate, alkoxide, or amide ligand or corresponding anions;
• L2 is an independent neutral ligand selected from the group comprising 1,10- phenanthroline (phen), 2,2-bipyridine group (bpy), 2,6-di(pyridine-3-yl)pyridine (tpy), phosphine oxide and derivatives thereof.

A light-emitting device comprising:

• a pair of electrodes including an anode and a cathode, wherein at least one electrode is transparent or semi-transparent;
• and
• a light-emitting layer between the pair of electrodes, wherein the light-emitting layer comprises a copolymer complex of the formula:
• wherein [Ax-[B(C)]y-Dz] denotes a single unit of the copolymer complex that is repeated n times, wherein n is an integer cireater than one, and wherein the single unit comprises a conjugated backbone coordinated to a complex (C) comprising rare earth metal(s);
• x. y and z are numbers cireater than zero such that x=y+z;
• A is independently selected from a group consisting of:
• fluorene, carbazole, oxadiazole, triphenylamine, and derivatives thereof;
• B is a functional ligand selected from the group consisting of:
• benzoic acid, 1,3-diphenylpropane-1,3-dione, 1,10-phenanthroline, 2,2-bipyridine, and derivatives thereof;
• and D is independently selected from the group consisting of:
• fluorene, carbazole, oxadiazole, triphenylamine, and derivatives thereof.

An apparatus comprising a copolymer complex of the formula:

• wherein [Ax-[B(C)]y-Dz] denotes a single unit of the copolymer complex that is repeated n times, wherein n is an integer greater than one, and wherein the single unit comprises a conjugated backbone coordinated to a complex (C) comprising rare earth metal(s):
• x. y and z are numbers greater than zero such that x=y+z;
• A is independently selected from a group consisting of:
• fluorene, carbazole, oxadiazole, triphenylamine, and derivatives thereof;
• B is a functional ligand selected from the group consisting of:
• benzoic acid. 1,3-diphenylpropane-1,3-dione, 1,10-phenanthroline, 2,2-bipyridine, and derivatives thereof;
• and D is independently selected from the group consisting of:
• fluorene, carbazole, oxadiazole, triphenylamine, and derivatives thereof.